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Game improvement golf club using hollow technology

a golf club and hollow technology, applied in golf clubs, golf, sport apparatus, etc., can solve the problems of difficult to rotate the object around the axis, the ball travels a shorter distance, and the technology of irons has not been effectively introduced

Inactive Publication Date: 2005-02-15
MIZUNO CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a new and improved golf club that improves the game. It has a unique design with a front plate and extended back portion that reinforces the hitting area. The club also uses toe and heel weighting elements or perimeter weighting elements to create a better feel and more accurate shots. The manufacturing process for these golf club heads is also provided. Overall, this invention provides a more effective and precise golf club for players of all levels.

Problems solved by technology

The club rotation not only affects the direction that the ball travels, but the tilt of the golf club also consumes energy causing the ball to travel a shorter distance as well.
The larger the moment of inertia of an object, the harder it is to rotate the object around that axis.
However, this technology has not been effectively introduced for irons.
The few irons that use hollow technology lack the solid feel of traditional forged irons and are not designed to optimize the moment of inertia of the golf club head.
The problem with most current game improvement clubs that have a large moment of inertia is that the large moment of inertia was created by removing mass directly behind the striking area.
While the large moment of inertia allows better performance for balls struck off-center, these clubs lack the solid feel of traditional forged clubs because of the lack of mass directly behind the striking area.
Another disadvantage of most game improvement clubs is that they fail to address one of the more common problems that face high-handicap golfers.
Most high handicap golfers have difficulty elevating iron shots, especially low lofted irons.
One of the reasons that low lofted irons are more difficult to elevate is that as the loft decreases, the center of mass of the golf club head moves higher up the face making it more difficult to elevate the golf ball.

Method used

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  • Game improvement golf club using hollow technology
  • Game improvement golf club using hollow technology
  • Game improvement golf club using hollow technology

Examples

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Embodiment Construction

Referring now in more detail to the drawings, as can be seen in FIGS. 1-4, a golf club head 10 includes a front plate 20 having two sides, a front side 22 and a rear side 24, a top 30, a sole 40, a toe 50, a heel 60, and an extended back portion 70 integral with the rear side of the front plate 20 and sole 40 which defines a hollow interior 80 where the extended back portion is integral with the rear side of the front plate between the top and the sole of the golf club head.

In one embodiment as shown in FIG. 1, front plate 20 is preferably constructed from a material that is bendable to allow for custom fitting of the golf club. A hosel 25 connects to the front plate 20 to allow a golf shaft to be attached to the golf club head. The hosel 25 also includes a neck 26 connected to the heel portion of the front plate 20. Front plate 20 also has a series of grooves 28 on the front side of the front plate 22. Each groove in this embodiment is approximately 0.4 mm deep and 0.8 mm wide and ...

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PUM

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Abstract

A golf club head comprising of a top, a sole, a toe, a heel, a front plate having a front and rear side, and an extended back portion integral with the sole and the rear side defining a cavity wherein the extended back portion is integral with the rear side between the top and the sole of the golf club head.

Description

BACKGROUND OF THE INVENTIONGame improvement golf clubs are designed to have a large “sweet spot” to allow golf shots that are not struck on the center of the golf club face to still travel to their intended target. Since many golfers often do not strike the golf ball in the center of the golf club face, a larger “sweet spot” can significantly improve golf scores. Having a large “sweet spot” really means that the golf club head has a large moment of inertia.Moment of inertia is important in golf because not all shots are struck in the middle of the golf club. Generally, shots struck on the toe of the golf club will cause the golf club to rotate clockwise causing the ball to travel to the right. Golf shots struck on the heel of the golf club will cause the golf club to rotate counter clockwise causing the ball to travel to the left. The club rotation not only affects the direction that the ball travels, but the tilt of the golf club also consumes energy causing the ball to travel a sh...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A63B53/04
CPCA63B53/04A63B53/047A63B2053/0433A63B53/0433A63B60/02A63B60/00
Inventor NAGAI, MASAOLLEWELLYN, DAVID G.
Owner MIZUNO CORPORATION